java - Unable to get JSON Object in request to the servlet -


i have created json object manually using data obtained in java script , sent json object servlet using ajax.

the object able receive unable convert json object again. using json-simple-1.1.jar .

i tried 

jsonobject json=(jsonobject)new jsonparser().parse("json_data");

but ended following error 

aug 31, 2015 2:28:13 source.main.updatedetails doget severe: null unexpected character (j) @ position 0.     @ org.json.simple.parser.yylex.yylex(yylex.java:610)     @ org.json.simple.parser.jsonparser.nexttoken(jsonparser.java:269)     @ org.json.simple.parser.jsonparser.parse(jsonparser.java:118)     @ org.json.simple.parser.jsonparser.parse(jsonparser.java:81)     @ org.json.simple.parser.jsonparser.parse(jsonparser.java:75)     @ source.main.updatedetails.processrequest(updatedetails.java:55)     @ source.main.updatedetails.doget(updatedetails.java:107)     @ javax.servlet.http.httpservlet.service(httpservlet.java:621)     @ javax.servlet.http.httpservlet.service(httpservlet.java:722)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:305)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210)     @ org.netbeans.modules.web.monitor.server.monitorfilter.dofilter(monitorfilter.java:393)     @ org.apache.catalina.core.applicationfilterchain.internaldofilter(applicationfilterchain.java:243)     @ org.apache.catalina.core.applicationfilterchain.dofilter(applicationfilterchain.java:210)     @ org.apache.catalina.core.standardwrappervalve.invoke(standardwrappervalve.java:225)

the output of json file sent request follows :

{        "0":     {     "card_name":"pallela.manga",     "aadhar_eid":"1046106160065750110728131521",     "aadhar_uid":"693228374919",     "relation":"self",     "age":"43"     },     "1":     {     "card_name":"kondababu",     "aadhar_eid":"1046106160008020110728125714",     "aadhar_uid":"996251988555",     "relation":"husband",     "age":"47"     },     "2":     {     "card_name":"srinivasarao",     "aadhar_eid":"1046106125348220110728131743",     "aadhar_uid":"609986909901",     "relation":"son","age":"25"     },     "3":     {     "card_name":"ganesh",     "aadhar_eid":"1046106160002957110728132026",     "aadhar_uid":"603873912563",     "relation":"son",     "age":"23"     } }

please me out of this.. thank you

you passing literal string function, not actual data:

jsonobject json = (jsonobject) new jsonparser().parse("json_data"); //                                                    ^^^^^^^^^^^

it should be:

jsonobject json = (jsonobject) new jsonparser().parse(json_data);

assuming json_data variable contains string json data


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